zinc phosphate cement


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zinc phos·phate ce·ment

a powder, containing primarily zinc oxide mixed with a liquid containing orthophosphoric acid to form a hard crystalline mass on standing, used in dentistry as a luting agent for cast metal restorations and orthodontic bands, and as a temporary restorative material, or a base under restorations, particularly in deep cavities.
Farlex Partner Medical Dictionary © Farlex 2012

zinc phosphate cement

The oldest of the dental cements, composed of a powder (zinc oxide and magnesium oxide) and a liquid (phosphoric acid and water). An acid-base reaction occurs when the powder and liquid are mixed. The set cement is unreacted zinc oxide particles suspended within a matrix of zinc aluminophosphate. The cement is used for inlays, crowns, bridges, and orthodontic appliances.
See also: cement
Medical Dictionary, © 2009 Farlex and Partners

zinc phos·phate ce·ment

(zingk fosfāt sĕ-ment)
Powder, containing primarily zinc oxide mixed with a liquid containing orthophosphoric acid to form a hard crystalline mass on standing, used in dentistry as a luting agent for cast metal restorations and orthodontic bands, and as a temporary restorative material, or a base under restorations, particularly in deep cavities.
Synonym(s): zinc oxyphosphate cement.
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
Zinc phosphate cement, exhibits adequate film thickness to comply with American Dental Association.
The glass ionomer cement exhibit higher compressive strengths than zinc phosphate cement. Previous studies.
A positive hypothesis was attained with regard to the cements demonstrating significant difference in bond strength values among each of the three types of cements, wherein resin cements showing the highest values followed by glass ionomer cement and zinc phosphate cement with lowest values.
There is a wide range of luting agents available in the market including GIC, zinc phosphate cements, zinc polycarboxylate and resin cements (dual cured, auto cured and photo-polymerized resin cements).
The zinc phosphate cement setting period has been defined as between 2 and 8 min.
This variability is common in studies testing the tensile strength of cast posts-and-cores luted with zinc phosphate cement. (21) Additionally, the length, diameter, geometric design, surface configuration of the retainer, and the cement type are also directly related to the retention and stability of cast posts-and-cores in the root canal.
Many studies have shown that the resistance to dissolution of glass ionomer cement was more than zinc phosphate cement.11,15,16 Oilo 16 have found that glass ionomer cement is more stronger, retentive and less soluble dental cement.
In this study the solubility of glass ionomer cement was compared with the zinc phosphate cement. Zinc phosphate cement presented higher solubility at high pH medium but the solubility of glass ionomer cement was higher at low pH values after 96 hours immersion.